Signoe op one-half to john watts



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BAND SAWING MAGHINE. No. 265,652.v g Patented Oct, 10, 1882.

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H. AYLESBURYQ BAND SAWING MACHINE. No.1265,652. Patented Oct; :19,W1882.

UNrTnn STATES argent irren.

HECTOR AYLESBURY, OF BRISTOL, COUNTY OF BRISTOL, ENGLAND, AS- SIGNOR OF ONE-HALF TO JOHN VATTS, OF SAME PLACE.

BAND sAwlNe-MACHINE.

SPECIFICATION forming part` of Letters Patent No. 265,652, dated October 10, 1882.

Application tiled May 31, 1881. (No model.)

Patented in England February l5, 1879, No. G12; in France June 1, 1881, No. 143,174, and in Belgium Juno 3, 18M, No. 54,809. 'i

To all whom it may concern:

Be it known that I, Hno'ron AYLESBURY, of the city and county of Bristol, England, have invented new and useful Improvements in or in connection with Band Sewing-liachines, (for which I have obtained a patent in Great Britain on the th day of February, 1879, No. 612,) of which the following is a speci iication.

The primary object of my invention is so to construct band-saw frames that I am able to cut two or more thicknesses of material at one and the same time, according to the number of eudlessband-saws used. For this purpose, supposing I use two saws, I employ two main guide-pulleys on one common shaft and two other main guide rollers or pulleys each on a separate shaft, and the two saws revolve by motion communicated to the shaft or shafts in the ordinary Way. One or both of the endless saws is or are passed round other guide pulleys, these latter .guide-pulleys being capable of having their position adjusted so that one ot' the saws may be drawn ont ofthe plane of the adjacent saw to thc distance required for the work to be accomplished. Both saws then revolving, the material operated on is cut twice, or in two places, at equal or unequal distances apart, upon the same frame, and at one operation, all according to the angle at which the saws are laid. A similar result is obtained tor three saws, and so on. The adjustment of the guide-pulleys may be effected by screws and slides or other convenient means, and a scale may be applied to the adjusting arrangement for convenience and regularity of work.

According to this invention endless-band saw frames are constructed in such a manner that by combination of two or more endless bandsaws I am able to cut two or more thicknesses at one and the same time, and so that the required thicknesses may he adjusted by the saw-blades without disturbing the fence.

Figure l is a side elevation, Fig. 2 a vertical section through A B, Fig. l, and Fig. 3 a vertical section through O D, Fig. 1, of a frame iitted with two endless band-saws. Fig. et is a plan, and Fig. 5 a plan section through line E F.

A and A are the two upper main flange or guide pulleys, and B B' the two lower main tlan ge or guide pulleys. The pulleys A and A' are mounted on separate shafts O and O', and the lower pulleys,B and B', are mounted on the common shaft or spindle l). The endless band-saws E and E' are passed round the pulleys A and B and A' and B', respectively.

F F are fast and loose pulleys on the lower shaft, 1), both saws being driven simultaneously.

The brackets a' a', carrying the pulleys AA', slide in the framing a, the travel of the pulleys and the brackets c' consequent on the movement of the pulleys L, L', and L2 being determined by the nut a2, screw a3, and spring a4, so giving the required tension to each blade.

The saws are provided with packing appliances F' and F2 for steadying the blade near the cut, which may be chambered out to receive oiled hemp to lubricate the blade at the same time.

The front saw-blade, E', is adj ustable, so that it may produce a cut through the timber at various distances from the cut produced by the saw-blade E and from the fence or feed-rolls K and K'. This adj ustment is produced by shifting the distending guide-pulleys L L'. The back saw-blade, E, passes over the pulleys L2 and L, the axes or centers ot' which latter are vertically true. The pulley L is mounted on the framing c, and is not adjustable, but the pulley L2 above is adjustable in a vertical direction only, to suit the various thicknesses to be cut. rlhe pulley L2 is mounted on the slide b, and is vertically adjustable by the screw b', working in a nut on the arm or framing a. The pulley L' is mounted on the slide D, and is horizontally adjustable by actuating the screw d'. The upper pulley, L, is simultaneously moved in a parallel direction with the lower pulley, L', the screw or shaft d' having a bevelwheel, d2, driving a vertical shaft, cl3, which also has a bevel-wheel, so rotatingthe screw or shaft d* in the same direction as the screw or shaft d, working in a nut, d5, on the slide d, which works in the arm or framing a. The vertical slide c is also contained and free to slidcin the horizontal slide di'.

If the bevel-wheel d2 be disengaged from its corresponding wheel by the clutch dx, Fig. 2, one of them may be moved relatively to the other, so that the saw-blade cuts on a bevel.

The feed-rolls K and K and fences K3 are adjustable along the table. A screw working in a nut is provided for actuating the feed-rolls K and fences K3.

fis the screwfor adjusting the opposite feedrolls, K. These rolls K and Kl are driven by miter or bevel gearing g, which receives motion by a worm and wheel, g', from cone or step pulleys IL h', the lower step-pulley, it, being mounted on the main driving-shaft D.

In the example here given Ihave shown one saw in a iixed position and one saw adjustable as to position of the cutting part; but I may use one saw in fixed position in combination with two or more saws adjustable as to position ofthe cutting parts relating to the latter, being simply repetitions of the parte, here shown in connection therewith.

rIhe means above described for distendin g an endless sawblade-videlicet, by a distending appliance both above and below the tablemay also be applied to saw-frames with a singie endless band-saw, whereby I am thus entwo outs can be made simultaneously, either parallel or at a bevel, substantially as set forth.

2. In a sawingmachine, the two band-saws E E', the pulleys B Bf, and the driving-shaft for the same, in combination with the pulleys A A and their separate shafts C G, elastically-adjusting bearings, the distending pulleys L L L2 L3, mechanism for simultaneously ad justing the pulleys LL', feed-rollers K K, and fences K3, and mechanism for adjusting the same, substantially as described and shown, whereby the two cuts are made simultaneously7 either parallel or at a bevel,the adjustment being eiiected without disturbing the fence, substantially' as set forth.

Il EG'IOR AYLESB URY.

Witnesses:

WILLIAM THOMPSON, RICHMOND OsMoND COLEMAN. 

